EASY MATH

FUNCTION:

A function is a mathematical device that converts one value to another in a known way. We can think of it as a 

machine. You feed the machine an input, it does some calculations on it, and then gives you back another value

 - the result of the calculations.

• The set of allowable inputs to a given function is called the domain of the function.

• The set of possible outputs is called the range of the function.

How we say it

This	is spoken as
	"f of x is defined as 3x"
	"j equals f of 3"

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